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The least effective pollinator principle: specialized morphology despite generalized ecology.
Plant Biology ( IF 4.2 ) Pub Date : 2020-06-16 , DOI: 10.1111/plb.13145 A Pauw 1 , A A Cocucci 2 , A N Sérsic 2
中文翻译：
最不有效的传粉媒介原理：尽管具有广义的生态学，但仍具有专门的形态。
更新日期：2020-06-16
Plant Biology ( IF 4.2 ) Pub Date : 2020-06-16 , DOI: 10.1111/plb.13145 A Pauw 1 , A A Cocucci 2 , A N Sérsic 2
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- The large body of work on the adaptation of plants to pollinators is still somewhat incomplete because most studies focus on one‐to‐one interactions. How will adaptation proceed in a multi‐pollinator environment? According to Stebbins' Most Effective Pollinator Principle, ‘the characteristics of the flower will be moulded by those pollinators that visit it most frequently and effectively.’
- To test this hypothesis, we studied the pollination biology of Pelargonium incrassatum (Geraniaceae) in the Namaqualand Region of Southern Africa. This species has a long floral tube and we expected its most important pollinator to have a long proboscis.
- Contrary to expectations, the most important pollinator was a short proboscid fly (a new species of Prosoeca), while Prosoeca peringueyi, which had a proboscis that matched the floral tube length, was a rare visitor. Consistent with the high degree of trait mismatching, we did not detect selection on tube length at most sites.
- The paradox of mismatching traits can be resolved by considering the strength of the trade‐off involved. Adaptation to the rare species can apparently occur without incurring the cost of reduced pollination by the abundant species. Generally, species may often evolve specialized morphology if they do not incur the cost of ecological specialization.
中文翻译：
最不有效的传粉媒介原理：尽管具有广义的生态学，但仍具有专门的形态。
- 关于植物适应传粉媒介的大量工作仍未完成，因为大多数研究都集中在一对一的相互作用上。在多传粉媒介环境中适应将如何进行？根据Stebbins的“最有效授粉媒介原理”，“花朵的特征将由最频繁，最有效地访问花朵的授粉媒介塑造”。
- 为了验证该假设，我们研究了南部非洲纳马夸兰地区天竺葵（天竺葵科）的授粉生物学。该物种的花管很长，我们期望其最重要的授粉媒介具有长鼻。
- 与预期相反，最重要的传粉者是短短的蝇蝇（Prosoeca的新种），而Prosoeca peringueyi的长鼻与花管长度匹配，是罕见的访客。与性状高度错配的高度一致，我们没有在大多数位点检测到管长的选择。
- 可以通过考虑相关权衡的强度来解决特征不匹配的悖论。显然可以发生对稀有物种的适应，而不会产生因丰富物种而减少授粉的代价。通常，如果物种不招致生态专业化的代价，它们通常可能会进化出专业化的形态。
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